UniProt
The reference protein sequence and functional annotation database.
Server
UniProt
EMBL-EBI / SIB / PIR · uniprot.org
- Does
- The reference protein sequence and functional annotation database.
- Access
- Free
Use this when
The starting point for anything about a known protein. Prefer reviewed Swiss-Prot entries; TrEMBL records are automatic and unverified.
External tool. We link, we don’t host — nothing you enter on Biology 101 reaches them.
About this tool
Curated protein records with function, domains, variants, PTMs and cross-references to nearly every other resource.
Science last reviewed .